Add type converters from Mojo notifications to the content types

content/content_browser.gypi

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../cc/cc.gyp:cc',
     '../cc/cc.gyp:cc_surfaces',
     '../components/leveldb/leveldb.gyp:leveldb_lib',
@@ skipping 1145 matching lines @@
       'browser/notifications/notification_event_dispatcher_impl.cc',
       'browser/notifications/notification_event_dispatcher_impl.h',
       'browser/notifications/notification_id_generator.cc',
       'browser/notifications/notification_id_generator.h',
       'browser/notifications/notification_message_filter.cc',
       'browser/notifications/notification_message_filter.h',
       'browser/notifications/page_notification_delegate.cc',
       'browser/notifications/page_notification_delegate.h',
       'browser/notifications/platform_notification_context_impl.cc',
       'browser/notifications/platform_notification_context_impl.h',
+      'browser/notifications/type_converters.cc',
+      'browser/notifications/type_converters.h',
       'browser/permissions/permission_service_context.cc',
       'browser/permissions/permission_service_context.h',
       'browser/permissions/permission_service_impl.cc',
       'browser/permissions/permission_service_impl.h',
       'browser/power_monitor_message_broadcaster.cc',
       'browser/power_monitor_message_broadcaster.h',
       'browser/power_save_blocker_android.h',
       'browser/power_save_blocker_chromeos.cc',
       'browser/power_save_blocker_impl.cc',
       'browser/power_save_blocker_impl.h',
@@ skipping 1032 matching lines @@
     ['enable_webvr==1 and OS=="android"', {
       'sources': [
         'browser/vr/android/cardboard/cardboard_vr_device.cc',
         'browser/vr/android/cardboard/cardboard_vr_device.h',
         'browser/vr/android/cardboard/cardboard_vr_device_provider.cc',
         'browser/vr/android/cardboard/cardboard_vr_device_provider.h',
       ],
     }],
   ],
 }